forked from TrueCloudLab/frostfs-api
c8054c5daa
Proposed protobuf format for Placement Policy simplifies direct editing in visual editors and import/export from other formats like JSON. Signed-off-by: Stanislav Bogatyrev <stanislav@nspcc.ru>
168 lines
6.4 KiB
Markdown
168 lines
6.4 KiB
Markdown
# Protocol Documentation
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<a name="top"></a>
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## Table of Contents
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- [netmap/types.proto](#netmap/types.proto)
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- Messages
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- [Filter](#neo.fs.v2.netmap.Filter)
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- [NodeInfo](#neo.fs.v2.netmap.NodeInfo)
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- [NodeInfo.Attribute](#neo.fs.v2.netmap.NodeInfo.Attribute)
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- [PlacementPolicy](#neo.fs.v2.netmap.PlacementPolicy)
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- [Replica](#neo.fs.v2.netmap.Replica)
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- [Selector](#neo.fs.v2.netmap.Selector)
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- [Scalar Value Types](#scalar-value-types)
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<a name="netmap/types.proto"></a>
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<p align="right"><a href="#top">Top</a></p>
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## netmap/types.proto
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<!-- end services -->
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<a name="neo.fs.v2.netmap.Filter"></a>
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### Message Filter
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Filter
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| name | [string](#string) | | Name of the filter or a reference to the named filter. '*' means application to the whole unfiltered NetworkMap At top level it's used as a filter name. At lower levels it's considered to be a reference to another named filter |
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| key | [string](#string) | | Key to filter |
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| op | [Operation](#neo.fs.v2.netmap.Operation) | | Filtering operation |
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| value | [string](#string) | | Value to match |
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| filters | [Filter](#neo.fs.v2.netmap.Filter) | repeated | List of inner filters. Top level operation will be applied to the whole list. |
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<a name="neo.fs.v2.netmap.NodeInfo"></a>
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### Message NodeInfo
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NeoFS node description
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| public_key | [bytes](#bytes) | | Public key of the NeoFS node in a binary format. |
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| address | [string](#string) | | Ways to connect to a node |
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| attributes | [NodeInfo.Attribute](#neo.fs.v2.netmap.NodeInfo.Attribute) | repeated | Carries list of the NeoFS node attributes in a string key-value format. |
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| state | [NodeInfo.State](#neo.fs.v2.netmap.NodeInfo.State) | | Carries state of the NeoFS node. |
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<a name="neo.fs.v2.netmap.NodeInfo.Attribute"></a>
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### Message NodeInfo.Attribute
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Attributes of the NeoFS node.
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| key | [string](#string) | | Key of the node attribute. |
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| value | [string](#string) | | Value of the node attribute. |
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| parents | [string](#string) | repeated | Parent keys, if any Example: For City it can be Region or Country |
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<a name="neo.fs.v2.netmap.PlacementPolicy"></a>
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### Message PlacementPolicy
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Set of rules to select a subset of nodes able to store container's objects
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| replicas | [Replica](#neo.fs.v2.netmap.Replica) | repeated | Rules to set number of object replicas and place each one into a particular bucket |
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| container_backup_factor | [uint32](#uint32) | | Container backup factor controls how deep NeoFS will search for nodes alternatives to include into container. |
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| selectors | [Selector](#neo.fs.v2.netmap.Selector) | repeated | Set of Selectors to form the container's nodes subset |
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| filters | [Filter](#neo.fs.v2.netmap.Filter) | repeated | List of named filters to reference in selectors |
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<a name="neo.fs.v2.netmap.Replica"></a>
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### Message Replica
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Exact bucket for each replica
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| count | [uint32](#uint32) | | How many object replicas to put |
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| selector | [string](#string) | | Named selector bucket to put in |
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<a name="neo.fs.v2.netmap.Selector"></a>
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### Message Selector
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Selector
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| Field | Type | Label | Description |
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| ----- | ---- | ----- | ----------- |
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| name | [string](#string) | | Selector name to reference in object placement section |
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| count | [uint32](#uint32) | | How many nodes to select from bucket |
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| attribute | [string](#string) | | Attribute bucket to select from |
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| filter | [string](#string) | | Filter reference to select from |
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<!-- end messages -->
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<a name="neo.fs.v2.netmap.NodeInfo.State"></a>
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### NodeInfo.State
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Represents the enumeration of various states of the NeoFS node.
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| Name | Number | Description |
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| ---- | ------ | ----------- |
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| UNSPECIFIED | 0 | Unknown state. |
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| ONLINE | 1 | Active state in the network. |
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| OFFLINE | 2 | Network unavailable state. |
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<a name="neo.fs.v2.netmap.Operation"></a>
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### Operation
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Operations on filters
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| Name | Number | Description |
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| ---- | ------ | ----------- |
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| OPERATION_UNSPECIFIED | 0 | No Operation defined |
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| EQ | 1 | Equal |
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| NE | 2 | Not Equal |
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| GT | 3 | Greater then |
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| GE | 4 | Greater or equal |
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| LT | 5 | Less then |
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| LE | 6 | Less or equal |
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| OR | 7 | Logical OR |
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| AND | 8 | Logical AND |
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<!-- end enums -->
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## Scalar Value Types
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| .proto Type | Notes | C++ Type | Java Type | Python Type |
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| ----------- | ----- | -------- | --------- | ----------- |
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| <a name="double" /> double | | double | double | float |
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| <a name="float" /> float | | float | float | float |
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| <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int |
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| <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long |
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| <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long |
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| <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long |
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| <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int |
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| <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long |
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| <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int |
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| <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long |
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| <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int |
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| <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long |
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| <a name="bool" /> bool | | bool | boolean | boolean |
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| <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode |
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| <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |
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